Quote:
Originally Posted by limeypride
To my mind, credible results must discard the 1ft rollout advantage. Dragstrips don't use it… at least not the ones I've been to.
|
Dragstrips do exclude the rollout when ET is calculated. Thus the reason that the inertial & gps timing gear, which can detect movement immediately, allow for the capability to mimic dragstrip results.
Racelogic's explanation of rollout.
The dragstrip timing equipment is unable to detect the 1st foot of movement due to design limitations. ET starts when the front tire clears the start line. The visual indicator of this is the 2nd staging light. If you were to draw a line where the front of the car is when the light goes on and off they would be approximately 1 foot apart.